Fluid pump



w. J PRESS FLUID PUMP July 1, 1930.

Filed Jan. 15, 1927 2 s t sh t l \NVEHTOR yum J. V BY Q K h-reauiv.

July l, 1930. w, J PRESS I 1,769,647

FLUID PUMP Filed Jan. 15, 1927 2 Sheets-Sheet 2 TTOENEY.

Wmum ass. M W

Patented July 1 1930 UNITED STATES WILLIAM J. PRESS, OF OTTAWA,OIiTTARIO, CANADA FLUID PUMP Application filed January 15, 1927. SerialNo. 161,850.

The present invention has relation to improvements in a fluid pumpappertaining particularly to one of that character cmodying a rotor anda stator casing, in which the rotor is eccentrically mounted, havinginlet and discharge ports for the fluid.

An object is to provide a pump of this nature with a rotor having proelling vanes and fluid receiving pockets a out its periphery.

A further object is to provide a Jump as described with a rotor havingperip ierial fluid,carr ing pockets s0 configuratedas to permit 0 theinsertion of the pro elling vanes which being thus interchangeab e maybe advanced from their normal pockets to the fluid pockets when theoriginal vane accommodating pockets become worn thus doubling the lengthof time that the rotor can function satisfactorily, the vacated normalvane accommodating pockets serving then as fluid carrying pockets.

A further object 1s to provide a fluid ump wherein the stator casingencloses an annular liner sweated in place having perforations toregister with both the inlet and outlet ports, the vanes of theeccentrically mounted rotor being reciprocally mounted in longitudinallyextending radial pockets therein and spring urged into continual contactwith the liner.

A still further object is the provision of a fluid ump capable ofstarting more'rapidly and c aracterized by augmented efficiency,durability, quietness and smoothness of operation and simplicity ofdesign and con-' struction all of which contribute to the production ofa device that is of. commercial worth. To the accomplishment of theseand related objects that may appear, as the description proceeds theinvention resides in the construction, combination and arrangement ofthe several co-o crating parts as shall be hereinafter more ullydescribed, il-

lustrated in the accompanying drawings and pointed out in the claimshereunto appended.

. The invention can be most clearly described and will be bestunderstood when reference is bad to the accompanying drawlngs, forming apart of this disclosure and wherein like characters indicate like partsthroughout the several views.

In the drawings z- Fig. 1 is a side elevation of the device;

Fig. 2 is an end elevation thereof;

Fig. 3 is a vertical section on the line 33 of Fig. 2;

Fig. 4 is a section at right angles thereto as on the line 44 of Fig. 1;and v Fig. 5 is a detail of the metal liner.

The present embodiment of the invention has been particularly designedfor use in mixing and feeding fuel to an oil burning furnace, both oiland air enterin by the inlet port and an atomized blast of gaseous fuelbeing blown from the outlet.

The stator casing 6 having a removable side plate 7 includes an openinlet pipe 8 and an outlet pipe 9, the former of which receives a smalloil feed pipe 10 that enters it radially. A metal liner 11 in the formon an annular bushing rin is sweated into the casing 6 and perforatedopposite the opening. of the inlet and outlet ipes 8 and 9 respectivelas at 12, thus giving continuity to the inner circumference of thecasing and tending to break up or atomize the fuel both entering andleaving. A rotor 13, carried by an eccentrically positioned drive shaft14, has a plurality of deep longitudi- .nally extending radial groovesor pockets 15 in which radiall reciprocable vanes 16 are mounted. Theases of these pockets are recessed as at 17; and the registering partsof the inner ends of the vanes correspondingly recessed as at 18 toaccommodate therebetween compressed coil springs 19 that act to urge thevanes 16 into continual contact with the linin ring 11.

Between eacll adjacent pair of vanes, the rotor 13 is provided with afuel pocket or reservoir 20' intended to carry a quantity of the fuelwhen above the horizontal plane of the rotor axis thus maintaining atall times a reserve su ply of fuel for instant startin and contributingin a material and decide. way to more adequately suppl the outlet andadding to the-conservation 0 fuel when starting.

. the

oil pockets 20 are shown as similar to the vane accommodating pockets15, the advantage thus gained bein that the vanes 16, when theiroriginal poc ets become worn due to the constant turning of the rotor inone direction with the accompanying rubhing of the vanes against thesame side wall of ockets, can be advanced to the fluid carryin pocketswhen the original vane accommo ating pockets become the fluid carryingpockets or resorvoirs whose worn condition does not impair or lessentheir utility as such.

As the structural details of my invention have been thoroughlydescribed, there now follows a brief reference to its use and operation.

On the starting of the rotor 13, actuated by the drive shaft 14 from anysuitable source, a suction is created in the open inlet 8 through whicha stream of air is permitted to enter that in passing acts to induce aflow of oil from the feed pipe 10; it being obvious that this oil feedis controlled by a float or other suitable valve as is common practiceand old and well known. This fuel comprising oil and air inpredetermined quantities is drawn into the pump through the perforations12 in the liner 11 during which it is partially mixed and atomized dueto its heavy impact with the perforated ring;

The rotor vanes 16 held in contact with the liner bythe springs 19maintain an almost fluid tight relation because of the presence of thefuel of high lubricant qualities V so that the rotor is exceedinglyeiiicient in operation and the completely atomized fuel is blown out ofthe outleti9 at a high velocity where the impact with the perforatedliner more thoroughly a'gitates the mixture.

As is usual in this type of pump there is considerable pressure aboutthe outlet, as the fiuidis pumped in this way, and so when approachingthe outlet the oil reservoirs 20 are filled with the mixture, whichsupply the maintain while'the rotor isin motion an on its cessationthose-pockets or reservoirs remaining above the horizontal plane of itsaxis retain their full complement that tends to condense on the leakageof pressure when the pump is idle. This supply isthus obviouslyinstantly available on the starting of the rotor, acting to immenseadvantage in providing the initial supply of fuel for ignition andlubricating "the lineriand vanes whose efiicacy is increased by 'thefluid tight seal resulting between than.

description and many apparently widely diiferent embodiments of myinvention constructed within the scope of the appended claims withoutdeparting from the spirit or scope thereof, it is intended that allmatters contained in the said accompanying specification and drawingsshall be inter- ,preted as illustrative and not in a limited sense. I

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is l. A fluid pump including a stator casing; arotor mounted eccentrically therein and having equally spaced uniformalternating fluid carrying and vane accommodating radial pockets ofuniform capacity; reciprocally operating vanes working in the said vaneaccommodating pockets and adapted to be changed to the said fluidcarrying pockets and thus permitting the vacate pockets to then serve asthe fluid carrying pockets; a lining within said casing and providedwith spaced perforations opposite the intake and discharge ports of saidcasing; and a spring for each of said vanes to constantly urge the sameinto contact with said lining.

A fluid pump including a stator casing; a rotor mounted eccentricallytherein signature. 7

WILLIAM J. PRESS.

From the foregoing description taken in '7 connection with theaccompanying drawings, it'will be manifest that a fluid pump is providedwhich will fulfill all. the necessary re uirements of suchla device, butas manv c anges could 'be made in the above

